January 2008 - The City of Palo Alto announced that more than 20% of its residents have enrolled in the city's PaloAltoGreen voluntary renewable energy program, making it the first green pricing program to reach the 20% participation threshold. In December 2006, then-Mayor Judy Kleinberg challenged the community to strive for a 20% participation rate and the goal was achieved in less than 12 months.

Under the PaloAltoGreen program, residential, business and industrial customers can purchase renewable energy equivalent to their electricity needs at an additional cost of 1.5¢/kWh above standard electric rates. Currently, participants in the PaloAltoGreen program are purchasing 41.5 million kWh of wind and solar energy annually, or the equivalent output of 12 wind turbines.